Problem with disabled form elements in IE8

Hi, I have two panels (form panels). The first has the config "hidden: false", the second "hidden: true". They have the same content (comboboxes and spinnerfields). When the page is rendered in IE 8 (only in IE), the disabled items of the first panel are shown correctly. This not happens when the second panel is shown (by the show() method). Its disabled items are not displayed in the right way (the buttons disappear or the fields disappear). Is it a bug of ExtJs??? Someone can help me please?
Excuse me for my bad english...

Yes, I did...but it's the same...I solved the problem by hiding the panels after the render (using the hide() method)...it's ok but it's not the best solution. Do you know a better method to solve this bug (of IE )?

I have got the same problem and resolve it by above method via css. try to investigate html that ext js generate for combo. div element which contain combos inputs have inline width: 17px but this width is override in another class. it`s not working in ie8 (I don`t no why)